Fountain-pen.



PATENTED MAY 26, 1903.

J. H. GROWBLL.

FOUNTAIN PEN. APBLIQATION FILED Nov. 2a, 1902.

N0 MODEL.

- QZINVLNIDH."

llllll TI'DEINZYLEI WI Z'NES a@ UNiED STATES Fatented lVIay 26, IQO.

PATENT OFFICE.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 729,139, dated May 26, 1903. Application filed November 28, 1902. Serial No. 133,081. (No model.)

.To all whom t may concern:

Be it known that I, JOHN H. CROWELL, a citizen of the United States, residing at Vineyard Haven, in the county of Dukes and State of Massachusetts, have invented a new and useful Improvement in Fountain-Pens, of which the following is a specification This invention has reference to an improvement in fountain-pens in which an elastic reservoir is used to contain the ink-supply.

The object of the invention is to insure a more reliable action of the elastic reservoir and a better control of the ink-supply.

To this end the invention consists in the peculiar and novel construction of the elastic reservoir and the operating devices for the same, whereby the supply of the ink to the reservoir and the delivery of the ink may be more reliably controlled, as will be more fully set forth hereinafter.

Figure l is a longitudinal sectional View of myimproved fountain-pen. Fig. 2 is a transverse sectional view taken through the groove of the operating-post-to show the stops by which the rotation of the post is limited. Fig. 3 is a side view of the elastic ink-reservoir, showing the same, on lan enlarged scale, with the central portion. cut out. Fig. 4 is an end View of the elastic ink-reservoir, and Fig. 5 is an end View of a modified form of the same. Fig. 6 is a detail view of the upper end of the fountainpen,`showing the index on the operating-post.

In the drawings, a indicates an open-ended cylindrical sleeve, and b the penholder,which serves as a plug by which one end of the sleeve a is closed. It has the flange b' bearing on the end of the sleeve a, the cylindrical plug h2 closely fitting in the sleeve ci, and the sleeve b3, on which one end of the elastic tube c is secured on one end and the tapering pen-support b4 on the other end. The penholder b is perforated longitudinally. The ink-supply tube b5 is secured in the perforation and extends to nearly the point of the pen be, supported in the tapering end of the penholder. Within the other end of the sleeve a is inserted part of the operating-post d, and on the inserted part is formed the groove d', having the stop cl2, preferably screwed into the body of the post cl. The stop ce', secured in the wall of the sleeve a,

projects into the groove d. The inserted por` tion of the post d fits the sleeve with a slid# ing fit and is provided with the transverselyextending hole d3, in which the coiled spring d4 is inserted, so that the ends of the coiled spring bear against the inner surface of the sleeve a and exert sufcient resistance to the turning .of the post d within the sleeve to prevent accidental disturbance of the adjust# ment of the operating-post d. The cylindrical stud d5 ou theinner end of the post d forms the support for the corresponding end of the elastic tube c. The portion of the post d extending beyond the end of the sleeve a serves lto turn the post and is pro vided with the index mark d", preferably placed on a line with the stop a when the stop d2 is in the position shown in Fig. 2. The projecting end of the post d may be formed into a head. The elastic tube c, which forms the ink-reservoir, is made of rubber or similar elastic material and is provided, preferably on the opposite sides, with the ribs formed, preferably, of rubber and integral with theV tube c.

In the modified form, as shown in Fig. 5, two wires c2 o2 are shown secured to the opposite sides of the elastic tube c by the bands c3 c3.

The object of the longitudinally-extending ribs c c or the Wires c2 c2 is to insure the uniform twisting of the elastic tube c from end to end and prevent the local twisting of the elastic tube, which causes local strain on the tube and impairs the utility as well as the life of the elastic tube.

To enable others skilled in the art to use my improved fountain-pen, I will describe the operation of the same more fully. When the reservoir ofthe pen is to be filled withink,the post d may be turned in the sleeve a nearly a complete turn, when the stop d2 is brought in contact with the stop a'. This turning movement of the post d acts onthe end of the elastic tube c, secured to the post, and ,by means of the ribs c c or the wires c2 c2 twists the elastic tube uniformly from end to end, thereby contracting the tube. When now the pen and the supply-tube b5 are immersed into ink and the operating-post d is turned in the reverse direction, the elastic tube will untwist and expand, drawing the ink into the elastic tube v c. The supply of ink to the pen may now bc I' ad regulated by turning the operating-post d in the direction ot' the arrow shown in Fig. 2 to partly contract the elastictube. The index-mark d6 indicates to the eye the exact condition of the concealed elastic tube and enables the user to accurately adjust the delivery of the ink to the pen.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a fountain-pen, an ink-reservoir of elastic material locally reinforced by projecting ribs formed integral with the reservoir, as described.

2. In, a fountain-pen, au ink-reservoir consisting of a tube of elastic material reinforced by longitudinal rib s, as described.

3. In a fountain-pen, the combination with the elastic tube c, of means for reinforcing the tube, as and for the purpose described.

4. In a fountain-peu, a rotatably-mountedl operating-post, an indeX on the post, and means, substantially as described, for holding the post in the adjusted position, as described.

5. In a fountain-pen, the combination with the elastic reservoir and the inclosing sleeve ct, ot the operating-post d, the groove d in the post, a rotatable stop in the groove and a fixed stop on the sleeve extending into the groove, as described.

6. In a fountain-pen, the combination with the sleeve ot and the stop ot/ on the same, of the operating-post d, the spring d4 extending transversely through the stop and bearing on the inner surface of the sleeve, the groove el', and the stop d2, as described.

7. In a fountain-pen, the combination with the elastic tube c and the sleeve a inclosing the tube, of the penholder b forming a plug for closing one end of the sleeve, and a support for one end of the elastic tube, of an operating-post secured to the other end of the elastic tube and mounted to rotate on a xed plane in the sleeve, an index on the operating-post, and stops limiting the rotation of operating-post, as described.

In testimony whereof I have signed my name to this specication in the presence of two subscribing witnesses.

' JOHN I-I. CROWELL.

Witnesses:

ADA E. HAGERTY, Jos. A. MILLER, J r. 

